Question

The displacement of a body is given to be proportional to the cube of time elapsed the magnitude of the acceleration of body is proportional to

Answer 1

Answer:

if X=kt^3

then a=6kt by differentiation

therefore a proportional to t

Answer 2

Answer:a α t

Explanation:

X α t^3

X=k t^3

Differentiating wrt. T

Dx/Dt =v = 3kt^2

Again differentiate wrt. T

Dv/Dt = a = 6kt

Therefore a α t